gwj / at91sam9263 · Commits

Commit aae6b32ae6253f7a6d7ebb1d77f9e34cc2e12553

Authored by edgar_igl
1 parent 4d07272d

CRIS: Convert divide step to TCG. 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4313 c046a42c-6fe2-441c-8c8c-71466251a162
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Showing 1 changed file with 18 additions and 1 deletions
target-cris/translate.c
  View file @aae6b32
... ... @@ -375,6 +375,23 @@ static void t_gen_lz_i32(TCGv d, TCGv x)
375 375 tcg_gen_discard_i32(n);
376 376 }
377 377  
  378 +static void t_gen_cris_dstep(TCGv d, TCGv s)
  379 +{
  380 + int l1;
  381 +
  382 + l1 = gen_new_label();
  383 +
  384 + /*
  385 + * d <<= 1
  386 + * if (d >= s)
  387 + * d -= s;
  388 + */
  389 + tcg_gen_shli_tl(d, d, 1);
  390 + tcg_gen_brcond_tl(TCG_COND_LTU, d, s, l1);
  391 + tcg_gen_sub_tl(d, d, s);
  392 + gen_set_label(l1);
  393 +}
  394 +
378 395 /* Extended arithmetics on CRIS. */
379 396 static inline void t_gen_add_flag(TCGv d, int flag)
380 397 {
... ... @@ -725,7 +742,7 @@ static void crisv32_alu_op(DisasContext *dc, int op, int rd, int size)
725 742 }
726 743 break;
727 744 case CC_OP_DSTEP:
728   - gen_op_dstep_T0_T1();
  745 + t_gen_cris_dstep(cpu_T[0], cpu_T[1]);
729 746 break;
730 747 case CC_OP_BOUND:
731 748 {
... ...